John Deere CD4039DF008 - Manual (Page 65)

Maintenance/As required
DPSG,CD03523,58 –19–16AUG99–1/1
CLEAN OR REPLACE AIR FILTER ELEMENT
CD30772
–UN–27AUG99
A—Primary element C—Air restriction indicator
B—Secondary (safety) D—Wing nut
element
Clean air filter when restriction indicator (C) is red.
Replace both primary (A) and secondary (B) filter
elements every 6 primary element cleaning or at least
once a year.
Proceed as follows:
1. Thoroughly clean all dirt around air filter area.
2. Remove wing nut (D) and remove primary element
(A) from canister.
IMPORTANT: Do not attempt to clean the
secondary (safety) element (B). It
must be only replaced as
recommended.
3. Thoroughly clean all dirt from inside canister.
IMPORTANT: If primary element shows evidence
of bad condition (punched,
dented...), replace both the primary
and the secondary elements.
4. Clean primary element with compressed air working
from “clean” to “dirty” side.
NOTE: Compressed air must not exceed 600 kPa
(6 bar; 88 psi).
5. Mark air filter to keep track of each cleaning
operation.
6. Fully depress air restriction indicator reset button
and release to reset indicator.
7. Check air system entirely for proper condition (see
CHECKING AIR INTAKE SYSTEM).
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